1. By Sunny Mahesh and Andy Yuwen

2. Cryptography = Secret Messages = Cool Stuff Ciphers Difference between plaintext and ciphertext Enciphering and Deciphering

4. Hill Ciphers encode messages of plaintext in successive pairs. For a Hill n-cipher, pairs of length n are taken and are enciphered by a n by n matrix

8. A Cooler Way To Do Math

10. Why are we still doing this? Because we’re cool, Dealz with it

17. OK. Now Its Your Time Secret Agents. Complete the final mission and receive your award. We have intercepted the code